Changes for page SDMX 3.0 Standards. Summary of Major Changes and New Functionality

Last modified by Helena on 2025/09/10 11:19

From 16.5 to 16.4 From 19.1 to 18.1

From version 18.1

edited by Helena
on 2025/05/16 13:25

Change comment: There is no comment for this version

To version 16.5

edited by Helena
on 2025/05/16 13:20

Change comment: There is no comment for this version

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@@ -492,8 +492,8 @@
  Data queries have been changed to provide more granular selections from contexts wider than just a Dataflow.
--(% class="wikigeneratedid" id="HExtendthecontextofdataretrieval" %)
--**Extend the context of data retrieval**
++=== Extend the context of data retrieval ===
++
  Version 2.1 data queries always retrieved data from a single specific Dataflow. In version 3.0, the query context may be specified as:
  * Dataflow;
@@ -502,20 +502,18 @@
  Data queries may also search across datasets, for instance “retrieve all data about a country”.
--(% class="wikigeneratedid" id="HComponent-basedfilters" %)
--**Component-based filters**
++=== Component-based filters ===
++
  Expressions filtering on individual components can now be included as part of the data query URL.
  /data/dataflow/ESTAT/ICP?c[REF_AREA]=CH&c[CONF_STATUS]=F
--(% class="wikigeneratedid" id="HSupportforoperators" %)
--**Support for operators**
++=== Support for operators ===
++
  Filter expressions can also include operators.
--/data/dataflow/ESTAT/ICP?c[REF_AREA]=DE&c[ICP_ITEM]=sw:01&c[TIME_PERIOD]=ge:2015
++/data/dataflow/ESTAT/ICP?c[REF_AREA]=DE&c[ICP_ITEM]=sw:01&c[TIME_PERIOD]=ge:2015 Operators include:
--Operators include:
--
  (% style="width:531.039px" %)
  |(% style="width:151px" %)eq|(% style="width:378px" %)Equals
  |(% style="width:151px" %)ne|(% style="width:378px" %)Not equal to
@@ -523,11 +523,10 @@
  |(% style="width:151px" %)ge|(% style="width:378px" %)Greater than or equal to
  |(% style="width:151px" %)sw|(% style="width:378px" %)Starts with
--(% class="wikigeneratedid" id="HSupportformultiplekeys" %)
--**Support for multiple keys**
++=== Support for multiple keys ===
++
  Queries can now specify multiple series keys.
--(% class="wikigeneratedid" %)
  /data/dataflow/ESTAT/ICP/1.0.0/M…A.ANR,M…A.INX,M…B.CTG
  == 5.3 Improved reference metadata queries ==
@@ -558,8 +558,8 @@
  The SDMX-ML XML messages have been modified and updated for version 3.0. While they broadly follow the same principles, there have been significant changes which break backward compatibility.
--(% class="wikigeneratedid" id="HStructuremessage" %)
--**Structure message**
++=== Structure message ===
++
  The SDMX-ML structure message is used for transmission of structural metadata. It closely reflects the SDMX information model and has therefore been significantly updated for version 3.0 with the addition of new structures, modifications where structures have changed, and removal of deprecated structures like Structure Set.
  Additionally, the way the individual artefacts are organised into ‘collections’ within the message has been significantly revised with a simpler flat structure adopted as set out in the following table:
@@ -610,8 +610,8 @@
  From version 3.0, collections can appear in any order within a structure message.
--(% class="wikigeneratedid" id="HDatamessages" %)
--**Data messages**
++=== Data messages ===
++
  All legacy SDMX-ML data messages have been deprecated with the exception of Structure Specific Data which becomes the sole standard format for transmission of SDMX data in XML in version 3.0.
  Specifically, the following data messages are not supported in version 3.0:
@@ -628,16 +628,16 @@
  The time series variant of the Structure Specific Data message is no longer used.
--(% class="wikigeneratedid" id="HReferencemetadatamessage" %)
--**Reference metadata message**
++=== Reference metadata message ===
++
  The Generic Metadata message remains the standard format for transmission of reference metadata sets in XML but has been modified to support the revised version 3.0 reference metadata model.
--(% class="wikigeneratedid" id="HRegistrystructuralmetadata2018query2019messages" %)
--**Registry structural metadata ‘query’ messages**
++=== Registry structural metadata ‘query’ messages ===
++
  As a consequence of the deprecation of the SOAP API and standardisation on REST, the structural metadata ‘query’ messages have all been removed. In version 3.0, querying an SDMX Registry for structural metadata is performed solely using REST GET.
--(% class="wikigeneratedid" id="HStructurereferencing" %)
--**Structure referencing**
++=== Structure referencing ===
++
  The option to reference structures using Agency, ID and Version has been removed. From SDMX version 3.0 URN is used for all referencing purposes with the exception of local references such as where groups reference dimensions within a DSD.
  == 6.2 SDMX-JSON ==
@@ -644,20 +644,20 @@
  Like SDMX-ML, the SDMX-JSON messages have been significantly modified and updated for version 3.0. They are not backwardly compatible with version 2.1.
--(% class="wikigeneratedid" id="HStructuremessage-1" %)
--**Structure message**
++=== Structure message ===
++
  The SDMX-JSON structure message closely replicates the SDMX-ML equivalent. Like that of SDMX-ML it has been updated to align it with the version 3.0 information model with addition, deletion and modification of artefacts as required. The organisation of the structure collections has also been revised as detailed in paragraph 6.1.
--(% class="wikigeneratedid" id="HDatamessage" %)
--**Data message**
++=== Data message ===
++
  The SDMX-JSON data message has similarly be updated. Additional changes have been made to allow a single message to carry data from multiple datasets with potentially different Data Structure Definitions to support REST data queries of the form “retrieve all data about a country”. For this reason, the version 3.0 SDMX-JSON is not backwardly compatible with version 2.1 data messages. Support has been added for the transmission of microdata and reporting of reference metadata on data as an integral part of the dataset.
--(% class="wikigeneratedid" id="HReferencemetadatamessage-1" %)
--**Reference metadata message**
++=== Reference metadata message ===
++
  The SDMX-JSON metadata message has also been updated to support the version 3.0 reference metadata and Metadataset specifications.
--(% class="wikigeneratedid" id="HStructurereferencing-1" %)
--**Structure referencing**
++=== Structure referencing ===
++
  As for SDMX-ML, the option to reference structures using Agency, ID and Version has been removed with URN used for all non-local referencing purposes.
  == 6.3 SDMX-CSV ==
@@ -664,8 +664,8 @@
  CSV in SDMX is used transmission of data and reference metadata only.
--(% class="wikigeneratedid" id="HDatamessage-1" %)
--**Data message**
++=== Data message ===
++
  The SDMX-CSV data message has been modified to align with the version 3.0 information model, support the enhanced REST API and ensure that data can be freely converted to and from the XML and JSON formats without loss. These changes include:
  * An additional column identifying the type if the artefact defining the structure of the data: “dataflow”, “datastructure” or “dataprovision”; • A column for the structure artefact’s identification of the form
@@ -674,11 +674,11 @@
  * A column for the dataset action: information, append, replace or delete, which is consistent with both the the SDMX-ML and SDMX-JSON data messages.
--(% class="wikigeneratedid" id="HReferencemetadatamessage-2" %)
--**Reference metadata message**
++=== Reference metadata message ===
++
  The SDMX-CSV metadata message is new for version 3.0 and, like the SDMX-ML and SDMX-JSON equivalents, is used for the transmission reference metadata sets.
--== 6.4 EDI deprecation ==
++=== 6.4 EDI deprecation ===
  The EDI format for transmission of both structures and data has been deprecated. Version 3.0 is therefore not backwardly compatible with legacy EDI messages.